Bug 213896 – [ macOS wk1 ] imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008.html is flaky failing

• Status: REOPENED
• Component: Tools / Tests

[Karl Rackler]

imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008.html 

Description:
The test is flaky failing on [ macOS wk1 ] release.  It was passing consistently until 5/29/2020.

History: 
https://results.webkit.org/?suite=layout-tests&test=imported%2Fw3c%2Fweb-platform-tests%2Fcss%2Fcss-flexbox%2Foverflow-auto-008.html&flavor=wk1&platform=mac

Diff:  
--- /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008-expected.txt
+++ /Volumes/Data/slave/catalina-debug-tests-wk1/build/layout-test-results/imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008-actual.txt
@@ -1,4 +1,4 @@
  
 
-PASS hbox dimensions 
+FAIL hbox dimensions assert_equals: expected 104 but got 89

[Radar WebKit Bug Importer]

<rdar://problem/65046136>

[Karl Rackler]

Created attachment 403391 [details]
Patch

[EWS]

Committed r263859: <https://trac.webkit.org/changeset/263859>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 403391 [details].

[Karl Rackler]

Reopening to attach new patch.

[Karl Rackler]

Created attachment 403400 [details]
Patch

[EWS]

Tools/Scripts/svn-apply failed to apply attachment 403400 [details] to trunk.
Please resolve the conflicts and upload a new patch.

[Karl Rackler]

I am able to reproduce this issue on 263855 using the commands below.

run-webkit-tests --iterations 500 --exit-after-n-failures 3 --force -f imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008.html

r263855:
[22/500] imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008.html failed unexpectedly (text diff)
[22/500] imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008.html failed unexpectedly (text diff)
[22/500] imported/w3c/web-platform-tests/css/css-flexbox/overflow-auto-008.html failed unexpectedly (text diff)

6 tests ran as expected, 3 didn't (491 didn't run):

[Karl Rackler]

Created attachment 403403 [details]
Patch

[EWS]

Committed r263864: <https://trac.webkit.org/changeset/263864>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 403403 [details].

[Alexey Proskuryakov]

Re-opening, because this only updated expectations.

Looking at the complete history, I see failures all the way back to 5/19, which is when the test was imported. So it was imported flaky.